以羟基封端的聚二甲基硅氧烷和α-溴代异丁酰溴为原料,制备了双官能度Br-PDMS-Br,并以此为大分子引发剂,CuCl和2,2′-联吡啶为催化剂,通过原子转移自由基聚合制备了聚硅氧烷-聚苯乙烯-KH570(PDMS/PS/KH570)线型聚合物,并进一步生成PDMS/PS交联聚合物,利用傅里叶变换红外光谱仪(FT-IR),差式扫描量热仪(DSC),热失重分析仪(TGA)及溶胀试验对聚合物进行了表征与测试。结果表明该交联聚合物具有较好的热稳定性和对甲苯的溶胀率达到286%。 Bifunctional Br-PDMS-Br was prepared by using hydroxy-terminated polydimethylsiloxane and α-bromoisobutyryl bromide as starting materials. CuCl and 2,2’- Polysiloxane-polystyrene-KH570 (PDMS / PS / KH570) linear polymer was prepared by atom transfer radical polymerization using bipyridine as catalyst, and PDMS / PS crosslinked polymer was further formed. The polymers were characterized and tested by FT-IR, DSC, TGA and swelling test. The results show that the crosslinked polymer has good thermal stability and the swelling rate of toluene reached 286%.